Axial Flow Roof Mounted Fans – SIGMA

Roof Mounted Axial Flow Fans HCTB / HCTT Series

admin — Mon, 16 May 2022 06:35:01 +0000

HCTB/HCTT

Range of axial roof fans with horizontal air discharge configuration available in 2 version:
-“B” models for air extract.
-“A” models for air supply.
Base manufactured from galvanized sheet steel.
Cowl manufactured from spun aluminium. The impellers for models 315 to 400 are manufactured from one piece injection moulded plastic, reinforced with chemical anchored fibreglass for additional strength. Models 450 to 1000 incorporate separate plastic blades locked within a die cast aluminium hub.
Available, depending upon the model, with single or three phase motors in 4, 6, 8 or 4/8 poles.

Motors
All motors are IP65 (1) Class F (2) with thermal protection (3) and ball bearings greased for life.
Electrical supply:
-Single phase 230V-50Hz (Capacitor located inside the wiring terminal box).
-Three phase 400V-50Hz.
(See characteristics chart).
All single phase models are speed controllable by voltage except HCTB/4- 560, HCTB/4-630.
All three phase models are speed controllable by autotransformer, except models HCTT/4- 560, HCTT/4-630, Ø 710 to 1000.
Three phase models, 1 speed motor, are speed controllable by inverter.
(1) 800 to 1000 models are IP55.
(2) Air stream temperature limits -40ºC to +70ºC (except models 800 to 1000 suitable for usage in environments from -20ºC to 40ºC).
(3) 800 to 1000 models are not equipped with thermal protection.

Aplications
Industrial process ventilation, agricultural facilities, swimming pools and data centers.

ATEX

HCTT ATEX
ATEX versions available for 3 phase models. For ambient working temperatures from -20ºC to +40ºC.
Motors IP55, class F.
– ATEX Flameproof – Gas
Only available for 800 to 1000 models
II 2G Ex d IIB T4 – ATEX Increased safety – Gas
II 2G Ex e II T3
– ATEX – Dust
Only available for 800 to 1000 models
Suspended flammable particles and non-conductive dust:
II 3D Ex tc IIIB T125ºC
Conductive dust:
II 3D Ex tc IIIC T125ºC (with IP65 motor)
To select HXTT ATEX refer to performance data or EASYVENT.
Note electrical data may vary for ATEX motors.

Attributes

Easy to install
Supports to facilitate installation in the roof.
High quality steel sleeve
Ensuring the long life of the fan.
Impeller dynamically balanced
Impellers are dynamically balanced, according to ISO 1940 standard, giving vibration free operation.
Bird-proof guard.

Roof Mounted Axial Flow Fans HGTT-V Series

admin — Mon, 16 May 2022 06:34:39 +0000

HGTT-V

Range of roof mounted axial flow fans, with vertical air discharge configuration, for air extract.
Casing formed from rolled sheet steel welded on the base with a corrosion resistant hot dipped galvanized finish. High grade die-cast aluminum blades locked within a pressed sheet steel hub. Backdraft shutter and bird proof outlet. Cylindrical casing formed from rolled sheet steel protected against corrosion by grey polyester paint coating.

Motors
– HGTT-V: Three-phase 4 pole motors 400V-50Hz, IP55, class F insulation:
220-240/380-415V-50Hz up to 3 kW.
380-415V-50Hz, for higher power motors and two speed motors.
(See characteristics chart).
– Electrical isolator fitted to fan casing.

Additional information
Standard air direction: form (A) configuration (Motor over impeller).

On request
6 pole motors.
2 speed motors 4/6 and 4/8 poles.

Attributes

Isolator
Electrical isolator.
Outlet guard
Outlet guard protection.
Support base
Base for roof installation.
Inlet flange
Flange for duct connection or bellmouth inlet.
Form (A) configuration
Standard air direction: form (A) configuration (Motor over impeller).
Web support
To strengthen base support. Model 1250 only.
Back draft shutter
Prevent back draft of air and entrance of rain water when the fan is switched off.

Roof Mounted Axial Flow Fans HGHT-V Series

admin — Mon, 16 May 2022 06:34:38 +0000

HGHT-V

Range of roof mounted axial flow fans, with vertical air discharge configuration, for air extract.
Designed for smoke extraction in fi re conditions and certified F400-120 and F300-120 (HGHT-V – CE marked).
Casing formed from rolled sheet steel welded on the base with a corrosion resistant hot dipped galvanized finish. High grade die-cast aluminum blades locked within a pressed sheet steel hub. Backdraft shutter and proof guard at the fan discharge. Cylindrical casing formed from rolled sheet steel protected against corrosion by grey polyester paint coating.

Motors
– HGHT-V F400-120: three-phase 4 pole motors 400V-50Hz, IP55, class H insulation.
– HGHT-V: F300-120: three-phase 4 pole motors 400V-50Hz, IP55, class H insulation.
– Electrical isolator fitted to fan casing.
Three phase 230/400V-50Hz up to 3 kW.
Three phase 400V-50Hz, for higher power motors and two speed motors.
(See characteristics chart).

Additional Information
Standard air direction: form (A)configuration (Motor over impeller).

On request
– 6 pole motors.
– 2 speed motors 4/6 and 4/8 poles.

Attributes

Isolator
Electrical isolator.
Outlet guard
Outlet guard protection.
Support base
Base for roof installation.
Inlet flange
Flange for duct connection or bellmouth inlet.
Form (A) configuration
Standard air direction: form (A) configuration (Motor over impeller).
Web support
To strengthen base support. Model 1250 only.
Back draft shutter
Prevent back draft of air and entrance of rain water when the fan is switched off.